CVE-2025-12673Public exploitNetwork attack vector

Unauthenticated arbitrary file upload via unchecked logo

Published Dec 6, 2025 · Updated Apr 8, 2026

Unrestricted file upload in Devsbrain Flex QR Code Generator 1.2.7 and earlier allows remote attackers to upload files via a logo request. The update_qr_code() AJAX handler retains the supplied filename extension and moves the logo into the WordPress uploads directory without validating its type. Authentication is not required; code execution depends on the web server executing an uploaded server-side script.

CVSS severity9.8
Critical
EPSS probability0.73%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Unrestricted file upload in Devsbrain Flex QR Code Generator 1.2.7 and earlier allows remote attackers to upload files via a logo request. The update_qr_code() AJAX handler retains the supplied filename extension and moves the logo into the WordPress uploads directory without validating its type. Authentication is not required; code execution depends on the web server executing an uploaded server-side script.

The record

CVE
CVE-2025-12673
Published
Dec 6, 2025
Updated
Apr 8, 2026
Vendor
Devsbrain
Product
Flex QR Code Generator
Classifications
CWE-434, T1190
Attack vector
network
Privileges
unauthenticated

Timeline

How it unfolded

  1. Dec 6, 2025CVE publishedPublication date reported by the CVE source.
  2. Apr 8, 2026Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=0 <=1.2.7

What conditions does exploitation require?

Attack vectornetwork
Required privilegesunauthenticated

What is affected?

Devsbrain · Flex QR Code Generatorversion=0 <=1.2.7

Published CVSS scores

9.8WordfenceCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 9, 2026Sep 15, 2026
Latest reporting daySep 15, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectornetwork
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-434Unrestricted Upload of File with Dangerous Type
T1190Exploit Public-Facing Application

Public exploit references

Labels summarize the accepted research assessment. They do not indicate a test against your environment.

Technologies

Your stack

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Your stack

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